CompTIA Server+

Answer - D - The best way to detect an NLX motherboard is the riser card that accommodates the expansion cards.

Key Takeaway: Motherboard form factors are defined by their size and the functionalities included. Of them, NLX is an industry-wide open specification that is a space-saving computer motherboard form factor. It rests on rails and simply slides out without any screws to unscrew or card to remove. The motherboard plugs into a riser card that sits at a 90-degree angle from the motherboard. A riser card is an expansion card that physically extends a slot for more expansion cards. When the motherboard is removed, the riser card stays in place. The riser card allows two to four expansion cards to be plugged in. These expansion cards sit parallel to the motherboard.